Enhancing magnetic near-field intensities with dielectric resonators

2013/03/19 by Guillaume Boudarham, Redha Abdeddaïm, Boudarham, Guillaume +4
Engineering · Materials Science · Physics and Astronomy · #Advanced Antenna and Metasurface Technologies #Electromagnetic Compatibility and Measurements #FOS: Physical sciences #Metamaterials and Metasurfaces Applications #Optics (physics.optics) #physics.optics

paper · pdf · doi:10.48550/arxiv.1303.4794

openalex publication_date 2013/03/19 · arxiv created 2013/07/30 · arxiv updated 2013/07/31 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

We measure strong magnetic field intensities in a subwavelength gap separating two dielectric resonators. This dimer magnetic antenna is characterized in the GHz spectral regime when considering three conditions of illumination. We detail the different magneto-electric couplings involved in the enhancement of the near magnetic field and derive the analytical expression of the magnetic field intensities. The results reported here in the GHz domain can be extended to other spectral domains since they are obtained with a dielectric permittivity 16 that can be observed in a very broad spectrum ranging from optics to radio-frequencies.

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